Bookmaking machine attachment



A ril 18, 1933. B. LEVINE BQOKMAKING MACHINE ATTACHMENT Filed June 6,1932 INVENTOR 7 ATTORN Patented Apr. 18, 1933 UNITED STATES IBERNHABDLEVINE, F BRONX, NEW YORK BOOIQVLAKING MACHINE ATTACHMENT Applicationfiled June 6,

This invention relates to an improvement in a machine used in making orbinding books. It relates particularly to an attachment that isespecially useful in connection with a machine known in the book bindingart as Smythe #3 sewing machine.

In making up books a number of so-called signatures is ordinarilyassembled and sewed together to be held securely in place and permit theleaves of the book to open.

In assembling and sewing the signatures machines are used by means ofwhich holes are first punched through the individual signatures for thesewing needles to enter.

In such machines now in common use the signatures are held upon an armthat is supported at only one end and the reaction caused by forcing thepunches through the aper while it is pressed against a member 29 to holdthe paper causes a considerable reaction thrust which not only oftencauses the free end of the arms to sag, but sometimes breaks the arms orsupport therefor.

When the arms carrying the signatures sag at one end the punches do notoperate effectively but produce the holes so that the sewing needles areoften broken.

One of the objects of this invention is to remedy this trouble andsecurely hold the 30 signature supporting arms securely in posi tionwhile the punches punch appropriate holes through the folds of thesignature, without interfering in any way with the normal operation ofthe machine. This is accomplished by causing a supporting cam to moveinto position to'support the free end of the signature-carrying armdurin the time the holes are being punched through the paper.

The invention will be understood from the description in connection withthe accompanying drawing in which Fig. 1 is an elevation of a portion ofa #3 Smythe sewing machine that is used in the book-binding art; Fig. 2is a similar view on an enlarged scale, partly broken away and partly insection; Fig. 8 is a section along the line 33 of Fig. 2, and Fig. 4: isa section along the line H of Fig. 2.

In the drawing reference character 1 in- 1932. Serial No. 615.521.

dicates a portion of the frame of a wellknown machine that is used inmaking or binding books. The machine is provided with a plate 2 throughwhich needles (not shown) are operated for sewing signatures afterpunches have punched the holes therein for this purpose. This plate alsoserves as a stop or rest against which the signatures are pressed whilethe holes are'being punched through them.

A vertical shaft 3 is journalled in bearings s on the frame of themachine 1. Arms 5 for supporting book signatures are revoluble aroundthe shaft 3 and are movable into place beneath the plate 2 while needleor thread holes are being punched through the folded portions of thesignatures that are supported on the upper edges of the arms. A set ofvertically movable punches 6 is carried by each arm 5 varying in'numberaccording to the number of holes that are to be punched through the booksignatures.

A hub 7, is journalled on the shaft 3 to which one end of each arm 5 isattached leaving the other ends of the arms free. Mech anism is used forautomatically lowering the hub 7 on the shaft 3 and turning itapredetermined amount at intervals and again raising it in regularsequence. The respective arms 5 are thus moved into position toreceivethe signatures with the folds thereof resting upon the upperedges'of the arms, then these arms are moved one after the other intoplace beneath the plate 2 where the holes are punched by the punches 6and are then lowered and moved into position where the punchedsignatures are removed and the arms are ready to receive freshsignatures and carry them into place to be punched by the punches 6.This mechanism is well-known and as it constitutes no portion of thisinvention, only a small portion of it is indicated at 8. I v

The punches 6 of each arm 5 are moved upwardly when the arm is below theplate 2 by a sliding cam Qcarried by it vhaving cam grooves 10 forrollers 11 in the arm. This cam 9 is moved longitudinally by mechanismconnected to its end 12 and is operated in synchronism with theoperation of the hub 7, thus raising the punch-carrying bar 13vertically and causing the punches 6 topunch holes at the folds of thesignature which is at, that moment between the upper edge of the arm 5and the bottom of the plate 2. The plate 2 is provided with holes alongits lower portion into which the ends of the punches 6 may enter afterthey have passed through the signatures. The mechanism for operatingthe-0211119 2113 the proper moment is also old and well-known andtherefore it is unnecessary to describe it more in detail as it forms nopart of this invention. punches 6 at the proper instant by moving thecams 9 to the right after. the holes. have been punched. I

When each arm is being raised into position below the plate 2 its outerend 15 enters a groove 16 having an entrance guide arm 16. The groove 16is provided for the end of the arm 5 in a plate 17 that is attached tothe frame 1 by screws 18. A stop 19 is provided at the upper end of thegroove 17 which is struck by the upper edge of the end 15 of the arm 5when it is in its uppermost position.

The parts thus far described are all old and machines of this sort arein extensive use. A serious difliculty has arisen in such machinesbecause when the cams 9 are moved to the left to cause the punches 6 topunch the holes the right-hand end of the arm 5 is apt to sag down,especially when thick signatures or signatures of tough paper are beingpunched. By the present invention this difficulty is completely overcomein a very simple and inexpensive manner by a device that is operated insynchroni'sm with the movement of the other parts of the. machine. Theimprovement comprises a guide member 20 that is attached to theframe 1by screws 21, or in any other convenient way. The guide member 20 has alongitudinal' opening 22 therethrough for supporting a support 23 thatis slidable in the opening 22 and is provided with a bevel end or cam 24which is moved under the end of each arm 15 at the proper moment. Anopening 25 is provided through the plate 17 in the upper portion of thegroove 16 through which the end'of the support 23 passes.

A. link 26 connects the support 23 to one end of a'lever 27 that ispivoted on the frame 1 at 28. The other end of the lever 27 is connectedby a link 29 to one end of the bell crank 30 that is pivoted at 31 onthe machine. The other endof the bell crank 30 c-arriesa roller 32journalled on a pinwhich extends into a cam groove 33 on a cam 34 thatis journalled in bearings on a bracket 35 attached to the frame of themachine and driven by gears that drive the mechanism 8 and the mechanismfor moving the cam 9 This mechanism- -withdraws theback and forth sothat the parts will move in proper sequence.

In the operation of the machine a signature is placed upon an arm 5while it is in its lowermost position and extending at right anglestothe position of the complete arm shown: in Fig. 1. The mechanism 8 turnsthe arm 90 and then raises it with its end 15 passing upwardly in thegroove 16 to the position shown in Fig. 1. The portion 33 of the camgroove 33 at that moment reaches the pin 32' on the lever 30 and therebycauses the link 29, lever 27 and link 26 to move the support 23 to theleft into the position shown in Fig. 1 with the upper edge of thissupport resting under the lower edge of the outer end 15 of the arm 5.The sloping end 24: or cam facilitates entry of the end of the support23 under" the end 15 and prevents it from being forced away from theplate 2 so long as the support 23 is in position. The mechanism forpushing the cam 9 to the left then erforms its function, thus pushingthe punc fies 6 up into the position shown in Fig. 1 to punch the holesthrough the signature. Due to the presence of the support 23 below theend 15 of the arm 5 the danger of the end of this arm sagging downwardlybecause of the reaction of the punches against the signature or paperthat is pressed against the lower side of the plate 2 is obviated. Assoon as the holes have been punched by the punches 6 the cam 9 is movedto the right to withdraw the punches from the holes and at the same timethe cam 34.- moves the support 23 to withdraw it from below the end 15of the arm 5, whereupon this arm is caused to descend to a positionbelow the lower end of the plate 17 and is i for needles through thesignatures, a support on saidframe for the free end of said arm,

and means to move said support intoposition prior to the operation ofsaid punches.

2. I11 a book making machine having a laterally movable arm supported atone end for book signatures and carrying punches for making holes forneedles through'the signatures, a support comprising a reciproeatingmember for the free end of said arm,

and means to move said support into position prior to the operation ofsaid punches.

3. In a book making machine havinga laterally movable arm supported atone end for book signatures and carrying punches for making holes forneedles through the signatures, a support comprising a reciproeatingmember for the free end of said arm movable substantially parallel tosaid arm, and means to move said sup ort into position prior to theoperation of said punches.

4:. In a book making machine having a laterally movable arm supported atone end for book signatures and carrying punches for making holes forneedles through the signatures, a support having a cam thereon for thefree end of said arm, and means to move said support into position priorto the operation of said punches.

5. In a device of the character described in which a swinging booksignature carrying member is provided with punches and is subjected to areaction thrust when said punches are operated, a longitudinallyreciprocating thrust resisting member movable into place to sustain saidreaction thrust and movable out of place to permit said swinging memberto move.

6. In a device of the character described having a frame and a swingingbook signature carrying member which is provided with punches and issubjected to a reaction thrust when said punches are operated, a thrustresisting member supported on said frame, and a cam and connectionssupported on said frame for operating said thrust resisting member.

BERNHARD LEVINE.

